Is anyone here knowledgable about M.U.G.E.N.?

[Lord_Jacobus1]

Me & a friend are making a Marth for M.U.G.E.N. 1.0, and I finished all the files except sound, & I can select him fine (although I messed up the small portrait with the big portrait), but when I actually try to play as him, I get this error:

Error message:
Could not open file:
Error loading chars/Marth/Marth.def
Error loading p1

What do I do?

EDIT: Now I get this error:

Error message: Undefined command label: "F, a, x, a, a"
If not misspelling in CNS, check CMD
Error parsing triggerall
Error parsing [State -1, Dancing Blade]
Error in [statedef -1]
Error in Marth.cmd
Error loading chars/Marth/Marth.def
Error loading p1

Library error message: Died parsing command = "F, a, x, a, a"

EDIT 2: I fixed all the errors causing it to not run, but now I realize that it runs poorly. The transparency colour isn't transparent, the animations are jerky, the jump height is too high, & most glaringly, they never attack. It's at this point that I'd give you the files so that you could see for yourself.

[Suzzie2]

....That sounds...difficult.
Did you like, double check all the coding and stuffs?

[Zekai]

I know of MUGEN but can't play it.

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[Lord_Jacobus1]

I'll TRIPLE check the coding! I'll even quadruple check, if I have to.